#controls {
    padding: 15px;
    background-color: var(--secondary-bg);
    width: 100%;
    box-sizing: border-box;
    position: sticky;
    top: 0;
    z-index: 10;
}

#searchInput {
    width: 100%;
    max-width: 300px;
    padding: 10px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 15px;
    background-color: var(--input-bg);
    color: var(--text-primary);
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-color), 0.2);
}

#fileGrid {
    display: grid;
    gap: 20px;
    padding: 20px;
    max-height: calc(100vh - 240px);
    overflow-y: auto;
    box-sizing: border-box;
    justify-items: center;
    background-color: var(--background-color);
}

/* Desktop - 4+ columns */
@media (min-width: 1200px) {
    #fileGrid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        max-width: 1400px;
        margin: 0 auto;
    }
}

/* Large tablets - 3 columns */
@media (min-width: 768px) and (max-width: 1199px) {
    #fileGrid {
        grid-template-columns: repeat(3, 1fr);
        max-width: 1000px;
        margin: 0 auto;
    }
}

/* Small tablets - 2 columns */
@media (min-width: 480px) and (max-width: 767px) {
    #fileGrid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 15px;
    }
}

/* Mobile - 1 column */
@media (max-width: 479px) {
    #fileGrid {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 10px;
    }
}

.card {
    cursor: pointer;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    width: 100%;
    max-width: 320px;
    height: 350px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px var(--shadow-color-dark);
}

.card-img-top {
    width: 100%;
    height: 150px;
    object-fit: cover;
    background-color: var(--model-thumb-bg);
}

.card-body {
    padding: 15px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.card-title {
    font-size: 1.1rem;
    margin: 0 0 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 600;
    color: var(--text-primary);
}

.card-text {
    font-size: 0.9rem;
    margin: 3px 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    line-height: 1.3;
    color: var(--text-secondary);
}

.project-badge {
    background: rgba(var(--primary-color), 0.1);
    color: var(--primary-color);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-badge i {
    color: var(--warning-color);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.project-badge span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.error-message {
    color: var(--danger-color);
    text-align: center;
    margin: 10px 0;
    padding: 10px;
}

/* Loading state */
.card.loading {
    opacity: 0.7;
}

.card.loading .card-img-top {
    background: linear-gradient(90deg, var(--secondary-bg) 25%, var(--border-color) 50%, var(--secondary-bg) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}